22-10-2010, 01:18 PM
plc2010.ppt (Size: 154 KB / Downloads: 85)
Logic control and PLC
Control system in which the variables are binary- they can have either of two possible values , 1 or 0 is a logic control system
Programmable Logic Control
Definition
“ A digitally operating electronic apparatus which uses a programmable memory for the internal storage of instructions for implementing specific function such as logic, sequencing, timing, counting and arithmetic to control through digital or analog input and output modules